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Application filed by И.А. Сыромятников, тников И.А. СыромfiledCriticalИ.А. Сыромятников
Priority to SU696ApriorityCriticalpatent/SU72304A1/ru
Application grantedgrantedCritical
Publication of SU72304A1publicationCriticalpatent/SU72304A1/ru